7

CVE-2019-3842

Exploit
In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Systemd Project ≫ Systemd Version <= 241
Systemd Project ≫ Systemd Version242 Updaterc1
Systemd Project ≫ Systemd Version242 Updaterc2
Systemd Project ≫ Systemd Version242 Updaterc3
Redhat ≫ Enterprise Linux Version7.0
Fedoraproject ≫ Fedora Version30
Debian ≫ Debian Linux Version8.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.22% 0.647
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7 1 5.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 4.4 3.4 6.4
AV:L/AC:M/Au:N/C:P/I:P/A:P
secalert@redhat.com 4.5 1 3.4
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE-285 Improper Authorization

The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
Third Party Advisory
http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.html
Third Party Advisory
Exploit
VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842
Third Party Advisory
Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
https://www.exploit-db.com/exploits/46743/
Third Party Advisory
Exploit
VDB Entry